Correction to: Patients’ usability of seven most used dry-powder inhalers in COPD

After publication of the Original research article [1] it was brought to our attention that the sentence at the bottom of the section entitled Discussion (pag 6 of 9, just below Fig. 4) must be corrected as follows:

Bibliographic Details
Main Authors: Roberto W. Dal Negro, Paola Turco, Massimiliano Povero
Format: Article
Language:English
Published: PAGEPress Publications 2019-11-01
Series:Multidisciplinary Respiratory Medicine
Online Access:http://link.springer.com/article/10.1186/s40248-019-0204-5